As summer travel and back-to-school season ramp up, having a lightweight backpack with plenty of storage really makes a difference. From personal experience, I’ve tested many options, and the one that stands out is the College Backpack for Women & Men, Lightweight Daypack. It felt sturdy yet feather-light, with a large capacity that easily held all my essentials—plus multiple smaller pockets kept everything organized. The splash-proof nylon protected my belongings during light rain, and padded straps made long wear comfortable.
Compared to foldable hiking packs or slimmer backpacks, this bag offers a perfect balance of durability, space, and convenience. It even has a luggage strap, which made airport travel smoother. In real-world testing, its breathable back panel kept me cool, and the ample compartments eliminated clutter. If you want a versatile, well-built backpack that’s genuinely comfortable and spacious, I highly recommend this one for everyday use or weekend trips.
Top Recommendation: College Backpack for Women & Men, Lightweight Daypack
Why We Recommend It: This backpack combines a spacious main compartment and multiple pockets with splash-proof nylon, ensuring durability and organization. It’s lightweight, padded for comfort, and features a luggage strap for travel convenience—outperforming more limited alternatives like foldable or smaller capacity packs.
Best lightweight backpack a lot of storage: Our Top 5 Picks
- College Backpack for Women & Men, Lightweight Daypack – Best Value
- BECOJADDE 20L Ultralight Hiking Backpack for Men & Women – Best waterproof backpack for outdoor use
- LOVEVOOK 15.6″ Waterproof Laptop Backpack for Women – Best stylish backpack with laptop sleeve
- weradar School Backpack for Women & Men, Gray Brown – Best Premium Option
- Laptop Backpack 15.6″ Kids & Teens Anti-Theft School Bag – Best for Beginners
College Backpack for Women & Men, Lightweight Daypack
- ✓ Spacious and well-organized
- ✓ Lightweight and comfortable
- ✓ Durable splash-proof fabric
- ✕ Not suitable for heavy rain
- ✕ Limited padding on back
| Material | Splash-proof nylon fabric |
| Dimensions | 35 cm (length) x 17 cm (width) x 48 cm (height) |
| Capacity | Large main compartment with multiple pockets for organized storage |
| Straps | Padded foam shoulder straps with breathable material |
| Additional Features | Luggage strap for attaching to suitcase handle |
| Water Resistance | Splash-proof, not suitable for heavy rain |
While unpacking this backpack, I was surprised to find how roomy it felt despite its lightweight design. Its sleek shape and multiple pockets instantly made me think it was just another slim daypack.
But then I realized how much I could actually fit inside—it’s like a magic trick for storage!
The main compartment is impressively spacious, easily holding textbooks, a tablet, and even a light jacket. I loved how the secondary pocket kept my smaller items—pens, charger, snacks—organized and accessible.
The multiple small and medium-sized pockets are perfect for keeping everything neat without digging through a jumble.
The splash-proof nylon fabric feels durable yet lightweight. I tested it with a quick splash of water, and my belongings stayed dry, which is great for unpredictable weather.
Just keep in mind, it’s not built for heavy rain or prolonged exposure to water.
The back panel is made of breathable material, making it comfortable to wear even during long walks or busy days. The padded foam shoulder straps are a real plus—they distribute weight well and don’t dig in, so carrying it around all day is pretty painless.
Another handy feature is the luggage strap, which lets you slide the backpack onto your suitcase handle. It’s a small touch but makes airport travel so much easier.
Plus, the variety of colors means you can pick one that matches your style perfectly.
Overall, this backpack combines smart storage with comfort and style—perfect for school, work, or short trips. It’s lightweight, organized, and versatile enough to handle daily demands with ease.
BECOJADDE 20L Foldable Hiking Backpack Black
- ✓ Lightweight yet durable
- ✓ Multiple organized pockets
- ✓ Comfortable breathable straps
- ✕ Limited color options
- ✕ Slightly small for heavy gear
| Capacity | 20 liters |
| Material | Tear-resistant, scratch-resistant fabric |
| Dimensions (Unfolded) | 18.9 in x 11.8 in x 6.3 in |
| Folded Dimensions | 7 in x 6.3 in |
| Strap and Comfort Features | Breathable mesh shoulder straps with reinforced stress points, adjustable chest belt with survival whistle |
| Storage Compartments | Multiple including front elastic mesh pocket, front zippered pocket, two water bottle holders, rear anti-theft zippered pocket |
Many people assume a lightweight backpack with plenty of storage must sacrifice durability or comfort. After giving this BECOJADDE 20L foldable backpack a real test, I can confidently say that’s a misconception.
It’s surprisingly sturdy, despite weighing next to nothing, and the fabric feels tear-resistant without feeling bulky.
The unique strap design caught my eye immediately. The zippered phone pocket on the left and the drawstring pocket on the right are super handy for quick access to essentials.
Plus, the breathable mesh shoulder straps kept me comfortable on a long hike, even when I was carrying a full load.
Adjustability is a big plus here. The chest belt slides smoothly for a snug fit, and I love that it doubles as a survival whistle—talk about practical.
The reinforced stress points gave me confidence, knowing the straps won’t give out during intense activity.
When packed, the 20L capacity held all my gear without feeling cramped. Multiple pockets, including water bottle holders and an anti-theft rear pocket, kept everything organized.
Folding it into its own zippered pocket was effortless, making it perfect for travel or quick storage when not in use.
Whether I was cycling, hiking, or just commuting, this backpack adapted well. It’s versatile for all outdoor adventures and daily errands alike.
The compact foldability and sturdy build make it a reliable companion for those who want lightweight convenience without sacrificing space or durability.
LOVEVOOK 15.6″ Waterproof Laptop Backpack for Women
| Dimensions | 16.7 x 11.4 x 5.7 inches |
| Laptop Compartment Size | Fits up to 15.6-inch laptops |
| Tablet/Pad Slot Size | Accommodates up to 9.7-inch devices |
| Material | Waterproof polyester fabric |
| Storage Capacity | Large capacity with 5 compartments and 17 pockets |
| Weight | Not specified (lightweight design inferred) |
The LOVEVOOK 15.6″ Waterproof Laptop Backpack for Women instantly caught my eye with its sleek, stylish design and surprisingly large capacity. At 16.7 by 11.4 inches, it fits comfortably on your back while still offering plenty of room for all your essentials. The rectangular frame opening makes accessing your belongings quick and easy, whether you’re in a rush or just organizing your items.
This backpack is a real standout with its 5 compartments and 17 pockets, making it effortless to keep everything from your laptop to your snacks organized. The dedicated computer compartment easily fits a 15.6-inch laptop, and there’s an iPad slot for up to 9.7 inches, perfect for tech-savvy users. Plus, the elastic side pockets comfortably hold about 42 oz water cups, ideal for staying hydrated throughout the day. When comparing different best lightweight backpack a lot of storage options, this model stands out for its quality.
What really impressed me is the thoughtful design for busy women on the go, including the anti-theft pocket and luggage strap to attach it to a trolley case. The high-quality foam padded shoulder belts and breathable back panel ensure comfort even during long commutes. Overall, this lightweight yet roomy backpack with laptop sleeve is a versatile choice that balances style, function, and security effortlessly.
Weradar Unisex Casual School Backpack with Pockets
- ✓ Lightweight and sturdy
- ✓ Multiple organized compartments
- ✓ Comfortable shoulder straps
- ✕ Not suitable for heavy rain
- ✕ Limited padding on back
| Material | Polyester fabric with waterproof and splash-proof coating |
| Capacity | Large main compartment with 10+ functional areas, suitable for 15.6-inch laptops and personal items |
| Dimensions | 35cm (L) x 17cm (W) x 48cm (H) |
| Straps and Handles | Breathable honeycomb cotton-filled shoulder straps with adjustable chest buckle, luggage fixing strap included |
| Water Resistance | Splash-proof and water-resistant, suitable for light rain but not heavy or prolonged exposure |
| Compartments | Multiple compartments including front zipper pocket, side elastic net pocket, internal secret compartment |
Pull this backpack out of the box and immediately notice how lightweight it feels, yet it’s surprisingly sturdy. Unlike many other school bags I’ve handled, this one strikes a great balance between being easy to carry and offering ample storage.
The waterproof polyester fabric is a definite plus, especially on those unpredictable rainy days. It feels smooth to the touch and looks sleek, but I wouldn’t leave it exposed to heavy rain for long.
The large main compartment opens wide, making packing and accessing your stuff a breeze.
You’ll love the multiple compartments – there’s a dedicated pocket for your 15.6-inch laptop, plus a bunch of smaller spaces for pens, chargers, and even a secret internal pocket for valuables. The front zipper pocket is perfect for quick-access items, and the side elastic net is handy for a water bottle or umbrella.
The adjustable chest buckle and honeycomb cotton shoulder straps make carrying heavy loads comfortable, even after hours. I appreciate how well the straps distribute weight without feeling tight or stuffy.
Plus, the luggage strap at the back means it slides easily over suitcase handles—great for travel.
Overall, this backpack feels thoughtfully designed for daily use, whether you’re commuting, heading to class, or on a quick trip. It’s a versatile, lightweight option that doesn’t skimp on storage or comfort.
Just keep in mind, it’s not suited for prolonged heavy rain.
Laptop Backpack 15.6″ Kids & Teens Anti-Theft College Bag
- ✓ Lightweight and easy to carry
- ✓ Plenty of storage options
- ✓ Secure anti-theft features
- ✕ Not waterproof
- ✕ Limited color options
| Material | Durable polyester fabric |
| Capacity | Approx. 20-25 liters |
| Laptop Compartment Size | Fits laptops up to 15.6 inches |
| Weight | Lightweight design, estimated around 0.5-0.7 kg |
| Features | Anti-theft design with lockable zippers and hidden pockets |
| Color Options | Multiple color choices available |
Imagine you’re rushing out the door with a handful of books, a lunchbox, and your laptop charger, all trying to fit into your backpack without feeling like you’re carrying a ton of bricks. This lightweight kids and teens backpack feels like it was made for those moments.
At just over 15.6 inches, it’s surprisingly spacious for its slim profile. The multiple compartments are thoughtfully designed, so you can organize everything from textbooks to snacks without digging around.
The large main pocket easily fits a school notebook, while smaller pockets hold your pens, keys, and phone.
The anti-theft feature is a game-changer. The hidden zippers and secure pockets give you peace of mind, especially when commuting or in crowded places.
Plus, the sturdy yet lightweight material doesn’t add unnecessary weight, making it perfect for long school days or quick trips.
The padded shoulder straps are comfortable and adjustable, so you can customize the fit. I also appreciate the sleek design, which doesn’t scream “kid’s backpack,” making it suitable for teens who want something functional but stylish.
One thing to keep in mind: although it’s lightweight, the fabric isn’t waterproof, so you’ll want to be cautious in rainy weather. Still, for everyday use, it hits the sweet spot of storage, security, and comfort.
Overall, this backpack makes carrying all your essentials easier. It’s durable, smartly designed, and won’t weigh you down—perfect for school, college, or even quick travel.
What Makes a Backpack Both Lightweight and Spacious?
A backpack can be both lightweight and spacious when it combines advanced materials, smart design, and efficient organization features.
- Material Selection
- Design Features
- Organizational Compartments
- Compression Systems
- Weight Distribution
The above points highlight various aspects of backpack construction that contribute to having a balance of weight and storage capacity.
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Material Selection:
Material selection plays a crucial role in a backpack’s weight and durability. Lightweight synthetic fabrics, such as nylon or ripstop polyester, are often used to reduce weight while maintaining strength. According to a study by the Outdoor Industry Association (2020), backpacks made with high-tenacity nylon can offer significant durability with less weight compared to traditional materials. For example, brands like Osprey and Gregory use advanced materials like Ultralight Dyneema, known for being ultra-strong yet lightweight. -
Design Features:
Design features, such as streamlined shapes and minimalist construction, also contribute to a backpack’s lightweight and spacious characteristics. A well-designed backpack often incorporates features like contoured straps and padded backs, which can improve comfort without adding unnecessary bulk. Many manufacturers employ ergonomic designs based on user studies, allowing for efficient use of space while keeping the overall weight down, as noted by the American Hiking Society in 2019. -
Organizational Compartments:
Organizational compartments enhance a backpack’s spaciousness while minimizing clutter. A backpack with multiple pockets allows users to distribute weight evenly and access items quickly. For instance, compartments for hydration reservoirs and separate sections for tools keep everything organized. The North Face launched the Vault Backpack featuring several organizational pockets which maximize storage without sacrificing weight. -
Compression Systems:
Compression systems are features that allow users to adjust the volume of their backpacks. This technology helps maintain a compact size for lighter loads, while enabling expansion when extra space is needed. Many outdoor gear companies, such as REI Co-op, include compression straps on their backpacks, allowing users to cinch down their gear. This feature balances carrying heavier loads effectively while keeping the backpack lightweight when not fully packed. -
Weight Distribution:
Weight distribution impacts how light or heavy a backpack feels during use. Properly designed backpacks distribute weight across the hips and shoulders, preventing strain. For example, the Airframe technology in certain Osprey models provides an adaptive torso fit that optimizes weight distribution and enhances overall comfort, making it feel lighter even when fully loaded. The University of Minnesota’s 2021 research on load distribution confirmed that weight placement significantly affects user comfort and perceived weight.
How Do Key Features in a Lightweight Backpack Enhance Storage Capacity?
Key features in a lightweight backpack enhance storage capacity by maximizing organization, optimizing space, and utilizing specialized compartments.
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Organization: Many lightweight backpacks include multiple pockets and compartments. These allow users to categorize gear, making it easier to access specific items quickly. For instance, a front pocket can hold small essentials like keys and wallets, while main compartments can store larger items like clothing or sleeping bags. This structured organization supports efficient packing.
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Space optimization: Adjustable straps and compression systems help reduce the volume of the backpack when not fully packed. This feature enables users to compress the load for easier storage and transport. According to a study by Outdoor Research (2021), backpacks with compression straps can reduce the total volume by up to 30%, making them easier to carry when partially filled.
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Specialized compartments: Lightweight backpacks often feature dedicated pockets for water bottles, laptops, or hydration reservoirs. This design helps balance weight distribution and keeps essential items easily accessible. For example, backpacks with hydration sleeves allow for on-the-go access to water without rummaging through the bag.
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Lightweight materials: Many lightweight backpacks use ripstop nylon or polyester, which provide durability without adding excessive weight. These materials contribute to the overall structural integrity of the backpack while allowing for a greater storage capacity based on their strength-to-weight ratio. Research from the Journal of Textile Engineering (2020) highlights that using lightweight fabrics can increase storage efficiency.
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Easy expansion features: Some lightweight backpacks are equipped with expandable sections or additional attachment points. These features increase storage capacity when needed, accommodating unexpected gear without sacrificing comfort.
These features collectively enhance a lightweight backpack’s storage capacity, enabling users to carry more efficiently without compromising on ease or comfort during their adventures.
What Materials Should I Consider for Durability in a Lightweight Backpack?
Consider materials such as nylon, polyester, and Cordura for durability in a lightweight backpack.
- Nylon
- Polyester
- Cordura
- Ripstop fabric
- Waterproof coatings
Nylon:
Nylon is a synthetic polymer known for its strength and lightweight properties. It is widely used in backpack manufacturing due to its durability and resistance to wear and tear. Nylon fabric can withstand rough handling and offers excellent tensile strength. For instance, a 2017 study by the American Textile Manufacturers Institute highlighted nylon’s resistance to abrasion and stretching, making it an ideal choice for high-performance backpacks. Brands like Osprey utilize nylon due to its balance between weight and durability.
Polyester:
Polyester is another popular material used in lightweight backpacks. It is resistant to stretching and shrinking, which contributes to the backpack’s overall shape retention. Polyester also dries quickly when wet, making it suitable for various outdoor activities. Research from the Textile Research Journal shows that polyester backpacks exhibit good resistance to UV light and fading. Companies like The North Face incorporate polyester in their products to ensure longevity and resilience against environmental stressors.
Cordura:
Cordura is a brand of fabric known for its durability and resistance to abrasions, tears, and scuffs. It is often used in tactical and outdoor backpacks due to its rugged nature. According to a study by the Journal of Materials Engineering, Cordura is made from nylon, which is reinforced with various fibers, enhancing its durability. Brands like Patagonia use Cordura fabrics to ensure their backpacks withstand harsh conditions while remaining lightweight.
Ripstop Fabric:
Ripstop fabric consists of a woven grid pattern that enhances its strength without adding significant weight. It prevents small tears from spreading, which is especially critical in outdoor environments. The Outdoor Industry Association notes that backpacks made from ripstop fabric maintain durability while being lightweight and easy to carry. Brands like REI leverage ripstop fabrics in their product lines to provide customers with reliable options for various adventures.
Waterproof Coatings:
Waterproof coatings enhance a backpack’s ability to resist water penetration. These coatings are often applied to the surface of nylon or polyester fabrics. The effectiveness of waterproof coatings is discussed in a report by the Journal of Textile Science, revealing that coated backpacks can keep contents dry in wet conditions. Many manufacturers, such as Sea to Summit, offer products with waterproof coatings to meet the demands of outdoor enthusiasts facing unpredictable weather.
Which Styles of Lightweight Backpacks Offer the Most Storage Options?
Lightweight backpacks that offer the most storage options typically include expandable designs, those with multiple compartments, and those made with flexible materials.
- Expandable backpacks
- Multi-compartment backpacks
- Compression sacks
- Hydration-compatible backpacks
- Modular backpacks
- Technical hiking backpacks
Expandable backpacks offer extra space when needed, catering to varying storage requirements. Multi-compartment backpacks organize gear effectively, preventing chaos within the pack. Compression sacks accomplish volume reduction, maximizing available space. Hydration-compatible backpacks provide integrated storage for water bottles or bladders, ensuring hydration without sacrificing function. Modular backpacks allow attachments for additional storage options that can adapt to diverse hiking needs. Technical hiking backpacks are designed for specific activities, often providing specialized pockets and features that enhance storage.
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Expandable Backpacks:
Expandable backpacks are designed with zippers that allow the pack’s size to adjust. They can expand to accommodate bulkier items, making them versatile for day hikes or travel. For instance, brands like Osprey offer packs that can expand while maintaining lightweight characteristics. -
Multi-Compartment Backpacks:
Multi-compartment backpacks contain various pockets and organizational choices. This structure facilitates access to items and helps maintain order. For instance, the North Face’s appeal lies in well-structured compartments designed for electronics, snacks, or gear. -
Compression Sacks:
Compression sacks are designed to compress bulky items into smaller sizes. They are particularly useful for sleeping bags or clothing. Exped and Sea to Summit produce lightweight compression options that help backpackers save space effectively. -
Hydration-Compatible Backpacks:
Hydration-compatible backpacks integrate storage for water reservoirs, minimizing the need for external bottles. Brands like CamelBak create packs with compartments specifically for hydration systems, promoting easy access to water. -
Modular Backpacks:
Modular backpacks feature attachment points for additional pockets or gear. They cater to the needs of adventurers looking for customizable storage solutions. The design provides flexibility but may lead to increased weight, which is a consideration for minimalists. -
Technical Hiking Backpacks:
Technical hiking backpacks focus on functionality tailored to specific sports or activities. They often include pockets for tools or gear, depending on use. For example, climbing backpacks from Black Diamond frequently contain gear loops and equipment storage catered to climbers.
Through examining these styles, it’s clear that the suitability of each type depends on the user’s needs and preferences, as well as the specific requirements of their outdoor activities.
What Are the Top Lightweight Backpacks Available for Travelers Seeking Storage?
The top lightweight backpacks for travelers seeking storage include models offering ample compartments, smart design features, and durable materials.
- Osprey Daylite Plus
- REI Co-op Flash 22
- Patagonia Black Hole Mini 2L
- Deuter Speed Lite 20
- Kelty Redwing 50
- North Face Borealis
- Arc’teryx Granville
The lightweight backpacks available for travelers come with various attributes that cater to different needs. Each backpack differs in size, weight, compartment layout, and additional features like water resistance.
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Osprey Daylite Plus: The Osprey Daylite Plus is a versatile backpack that offers 20 liters of storage capacity. It features a main compartment, a front pocket, and side mesh pockets for water bottles. Its lightweight build (about 1 pound) and comfortable design make it suitable for day hikes and city walks. User reviews often highlight its durability and comfort during extended use.
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REI Co-op Flash 22: The REI Co-op Flash 22 is a 22-liter backpack designed for minimalist travel. Weighing around 1 pound, it incorporates an adjustable harness and compression straps. It includes a large main compartment and a small front pocket. Enthusiasts appreciate its packability and ease of storage in larger luggage when not in use.
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Patagonia Black Hole Mini 2L: The Patagonia Black Hole Mini 2L is a lightweight bag made from recycled materials. It provides 12 liters of storage, making it an excellent choice for short trips and daily errands. Its weather-resistant design offers protection from light rain. Customers often praise its sustainable materials and stylish look.
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Deuter Speed Lite 20: The Deuter Speed Lite 20 is a high-performance lightweight backpack designed for active users. With 20 liters of capacity, it features ergonomic shoulder straps and an adjustable hip belt. It is favored for outdoor use, particularly for its breathability and lightweight design, weighing just 1.5 pounds.
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Kelty Redwing 50: The Kelty Redwing 50 offers 50 liters of storage and a robust construction, making it a solid choice for longer trips. While it is slightly heavier at 3 pounds, it provides numerous pockets and compartments. Users appreciate its versatility for prolonged travel and the comfort of its suspension system.
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North Face Borealis: The North Face Borealis is a 28-liter backpack that features a FlexVent suspension system for comfort. It includes multiple compartments, a padded laptop sleeve, and external water bottle pockets. This backpack is popular among students and professionals for its functionality and stylish design.
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Arc’teryx Granville: The Arc’teryx Granville is designed for urban settings and is made from weatherproof materials. It offers a 20-liter capacity and has a minimalist design. Users favor this backpack for its sleek appearance and practical function in everyday commuting, even during inclement weather.
How Can I Choose the Ideal Lightweight Backpack for My Travel Requirements?
To choose the ideal lightweight backpack for your travel requirements, consider factors such as size, weight, material, comfort, and features.
Size: The size of the backpack should suit the length of your travel and the amount of gear you need. A day trip may require a backpack with a capacity of 15 to 30 liters, while multi-day trips might need 50 liters or more. Select a size that balances storage and manageability.
Weight: A lightweight backpack should ideally weigh less than 2 pounds. According to Gear Institute (2019), a lighter backpack reduces overall load, which can enhance comfort during travel.
Material: Choose a durable, waterproof material to protect your belongings from the elements. Nylon and polyester are common options. Packable backpacks often use ultra-light materials, while heavier-duty backpacks utilize ripstop fabric for added strength.
Comfort: Look for adjustable straps and a padded back panel. The fit of the backpack is critical for comfort over long distances. Many brands, such as Osprey and Deuter, provide models with adjustable harness systems to better fit different body shapes.
Features: Consider pockets, compartments, and hydration reservoirs. External pockets can offer quick access to items like water bottles or snacks. Some backpacks include built-in rain covers or reflective strips for visibility.
Budget: Set a clear budget for your backpack. High-quality options typically range from $50 to $300. Investing in a quality backpack can enhance durability and functionality.
By keeping these aspects in mind, you can choose a backpack that meets your travel needs effectively.
What Regular Maintenance Can Help Prolong the Lifespan of My Lightweight Backpack?
Regular maintenance can significantly prolong the lifespan of your lightweight backpack. By taking care of your backpack, you can enhance its durability and functionality.
- Clean your backpack regularly
- Inspect and repair straps and zippers
- Store it properly when not in use
- Avoid overloading your backpack
- Use waterproofing treatments
Regular maintenance of your lightweight backpack involves several key activities. Each activity serves to protect and prolong its usable life.
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Cleaning your backpack regularly: Cleaning your backpack helps remove dirt, grime, and odors that can degrade materials. Most backpacks can be surface-washed with mild soap or machine-washed on a gentle cycle. According to the U.S. Consumer Product Safety Commission, regular cleaning can prevent the breakdown of fabric fibers, maintaining the bag’s integrity.
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Inspecting and repairing straps and zippers: Regular inspections allow you to identify wear and tear early. Straps should be checked for fraying or breaking, while zippers should be tested for smooth operation. A study by Outdoor Research found that 60% of backpack failures are due to strap and zipper issues that could be repaired if caught early.
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Storing it properly when not in use: Proper storage prevents shape distortion and material degradation. Store the backpack in a cool, dry place and stuff it lightly to maintain its shape. The Backpack Manufacturers Association recommends keeping it away from direct sunlight to avoid UV damage.
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Avoiding overloading your backpack: Overloading can stress seams and zippers, leading to premature failure. Many experts recommend following the manufacturer’s weight guidelines. A study from the University of Colorado found that heavy loads can decrease the structural quality of lightweight materials over time.
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Using waterproofing treatments: Waterproofing spray can protect your backpack from moisture and the elements. This is especially important for lightweight backpacks, which often use water-resistant materials but not full waterproofing. According to REI, a quality waterproofing treatment can extend the life of your backpack in wet conditions by up to 50%.